Assessment of the eEurope 2005 Action Plan Benchmarking Index “E-Business Readiness Composite Indicator” using data collected by National Statistical Institutes and harmonised by Eurostat, using surveys “ICT usage of enterprises”, with reference years 2003 and 2004. This report contains data from 26 countries as collected in 2004 and as reported by Eurostat in June 2005. Performed analyses include robustness analysis, uncertainty and sensitivity analysis for two categories of ICT (Adoption and Use), univariate analysis of basic indicators; principal component analysis and finally assessment of resulted country rankings and methodological notes. Report includes 21 Tables and 20 Figures. 47 pp.